High and low temperature environment simulation experiment system

Abstract

The invention discloses a high and low temperature environment simulation experiment system. The high and low temperature environment simulation experiment system comprises a high and low temperature experiment box, a gas replacement assembly, a fast heating and heat-preservation assembly and a fast cooling and heat-preservation assembly. The gas replacement assembly is used for replacing air in the high and low temperature experiment box with ultralow-dew point high-purity nitrogen. The fast heating and heat-preservation assembly is used for heating the interior of the high and low temperature experiment box to a required temperature and keeping the temperature in a certain time period. The fast cooling and heat-preservation assembly is used for cooling the high and low temperature experiment box to a required temperature and keeping the temperature in a certain time period. The high and low temperature environment simulation experiment system utilizes an air-bath vaporizer to supply a small flow of system nitrogen, the high and low temperature experiment box utilizes a wall compound-insulation method so that the operation can be carried out at a temperature of -120 to 170 DEG C, and circulating cooling and heating fans work respectively in appropriate temperature ranges so that circulating fan use reliability is guaranteed.

Description

technical field [0001] The invention relates to a high-low temperature environment simulation test system in the field of cryogenic and high-temperature heating technology, in particular to a high-low temperature environment simulation test system in the field of liquid nitrogen refrigeration and heating technology. Background technique [0002] With the development of my country's new generation of spacecraft technology, the functional density of spacecraft has increased, the number of surface sensitive components has increased, and the design life has increased, especially the use of a large number of new composite materials and polymer materials. Spacecraft is becoming more sensitive to space environmental effects, and the impact of space special environmental effects that have not attracted enough attention on spacecraft has become increasingly prominent and has become a key factor affecting the long life and high reliability of spacecraft. The problem of on-orbit failure...

AI Technical Summary

Problems solved by technology

[0003] At present, the test system that can meet the high and low temperature test of spacecraft includes a high and low temperature test box. This test box system uses an electric heater to provide heat for the system, and uses liquid nitrogen spray to provide cooling for the system. The system is an open circulation system. The heated or cooled gas nitrogen passes through the high and low temperature test box and is directly discharged outside, resulting in a direct waste of heat and cooling, and the working temperature of the high and low temperature test box is generally -50°C to +50°C, and the working temperature range is narrow. Slow heating and cooling speed, poor temperature uniformity

At present, the high and low temperature test box that can be used for high and low temperature experiments of spacecraft and has an invention patent has not been retrieved

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